DOI: 10.130/04011312194
Scopus记录号: 2-s2.0-84887250350
论文题名: Porosity of Devonian and Mississippian New Albany Shale across a maturation gradient: Insights from organic petrology', gas adsorption, and mercury intrusion
作者: Mastalerz M. ; Schimmelmann A. ; Drobniak A. ; Chen Y.
刊名: AAPG Bulletin
ISSN: 0149-1651
EISSN: 1558-9381
出版年: 2013
发表日期: 2013
卷: 97, 期: 10 起始页码: 1621
结束页码: 1643
语种: 英语
Scopus关键词: Charac-teristics of porosities
; Hydrocarbon generation
; Matter transformation
; Mineralogical compositions
; Pore-size distribution
; Porosity difference
; Total organic carbon content
; Vitrinite reflectance
; Biogeochemistry
; Biological materials
; Carbon dioxide
; Gas adsorption
; Mercury (metal)
; Organic compounds
; Petrography
; Petrology
; Pore size
; Rocks
; Shale
; adsorption
; capillary pressure
; Devonian
; hydrocarbon generation
; kerogen
; maturation
; migration
; Mississippian
; organic matter
; petrology
; porosity
; shale
; vitrinite reflectance
; Illinois Basin
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The evolution of porosity in shales with increasing maturity was examined in a suite of five New Albany Shale samples spanning a maturity range from immature (vitrinite reflectance, Ro 0.35%) to postmature (R o, 1.41%). Devonian to lower Mississippian New Albany Shale samples from the Illinois Basin used in this study contain marine type II kerogen having total organic carbon contents from 1.2 to 13.0 wt. %. Organic petrology, CO2 and N2 low-pressure adsorption, and mercury intrusion capillary pressure techniques were used to quantify pore volumes, pore sizes, and pore-size distributions. Increasing maturity of the New Albany Shale is paralleled by many changes in the characteristics of porosity. The total porosity of 9.1 vol. % in immature New Albany Shale decreases to 1.5 vol. % in the late mature sample, whereas total pore volumes decrease from 0.0365 to 0.0059 cm3/g in the same sequence. Reversing the trend at even higher maturity, the postmature New Albany Shale exhibits higher porosity and larger total pore volumes compared to the late mature sample. With increasing maturity, changes in total porosity and total pore volumes are accompanied by changes in pore-size distributions and relative proportions of micropores, mesopores, and macropores. Porosity-related variances are direcdy related to differences in the amount and character of the organic matter and mineralogical composition, but maturity exerts the dominant control upon these characteristics. We conclude that organic matter transformation due to hydrocarbon generation and migration is a pivotal cause of the observed porosity differences. Copyright © 2013, The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887250350&doi=10.130%2f04011312194&partnerID=40&md5=06a0490d0c8e09ceceb3613b47727a7a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13221
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Mastalerz M.,Schimmelmann A.,Drobniak A.,et al. Porosity of Devonian and Mississippian New Albany Shale across a maturation gradient: Insights from organic petrology', gas adsorption, and mercury intrusion[J]. AAPG Bulletin,2013-01-01,97(10)